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/*
* quota.c --- code for handling ext4 quota inodes
*
*/
#include "config.h"
#ifdef HAVE_SYS_MOUNT_H
#include <sys/param.h>
#include <sys/mount.h>
#define MNT_FL (MS_MGC_VAL | MS_RDONLY)
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#include "e2fsck.h"
#include "problem.h"
static errcode_t move_quota_inode(ext2_filsys fs, ext2_ino_t from_ino,
ext2_ino_t to_ino, enum quota_type qtype)
{
struct ext2_inode inode;
errcode_t retval;
char qf_name[QUOTA_NAME_LEN];
/* We need the inode bitmap to be loaded */
retval = ext2fs_read_bitmaps(fs);
if (retval) {
com_err("ext2fs_read_bitmaps", retval, "%s",
_("in move_quota_inode"));
return retval;
}
retval = ext2fs_read_inode(fs, from_ino, &inode);
if (retval) {
com_err("ext2fs_read_inode", retval, "%s",
_("in move_quota_inode"));
return retval;
}
inode.i_links_count = 1;
inode.i_mode = LINUX_S_IFREG | 0600;
inode.i_flags = EXT2_IMMUTABLE_FL;
if (ext2fs_has_feature_extents(fs->super))
inode.i_flags |= EXT4_EXTENTS_FL;
retval = ext2fs_write_new_inode(fs, to_ino, &inode);
if (retval) {
com_err("ext2fs_write_new_inode", retval, "%s",
_("in move_quota_inode"));
return retval;
}
/* unlink the old inode */
quota_get_qf_name(qtype, QFMT_VFS_V1, qf_name);
retval = ext2fs_unlink(fs, EXT2_ROOT_INO, qf_name, from_ino, 0);
if (retval) {
com_err("ext2fs_unlink", retval, "%s",
_("in move_quota_inode"));
return retval;
}
ext2fs_inode_alloc_stats(fs, from_ino, -1);
/* Clear out the original inode in the inode-table block. */
memset(&inode, 0, sizeof(struct ext2_inode));
ext2fs_write_inode(fs, from_ino, &inode);
return 0;
}
void e2fsck_hide_quota(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
struct problem_context pctx;
ext2_filsys fs = ctx->fs;
enum quota_type qtype;
ext2_ino_t quota_ino;
clear_problem_context(&pctx);
if ((ctx->options & E2F_OPT_READONLY) ||
!ext2fs_has_feature_quota(sb))
return;
for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
pctx.dir = 2; /* This is a guess, but it's a good one */
pctx.ino = *quota_sb_inump(sb, qtype);
pctx.num = qtype;
quota_ino = quota_type2inum(qtype, fs->super);
if (pctx.ino && (pctx.ino != quota_ino) &&
fix_problem(ctx, PR_0_HIDE_QUOTA, &pctx)) {
if (move_quota_inode(fs, pctx.ino, quota_ino, qtype))
continue;
*quota_sb_inump(sb, qtype) = quota_ino;
ext2fs_mark_super_dirty(fs);
}
}
return;
}
void e2fsck_validate_quota_inodes(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
struct problem_context pctx;
ext2_filsys fs = ctx->fs;
enum quota_type qtype;
clear_problem_context(&pctx);
for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
pctx.ino = *quota_sb_inump(sb, qtype);
pctx.num = qtype;
if (pctx.ino &&
((pctx.ino == EXT2_BAD_INO) ||
(pctx.ino == EXT2_ROOT_INO) ||
(pctx.ino == EXT2_BOOT_LOADER_INO) ||
(pctx.ino == EXT2_UNDEL_DIR_INO) ||
(pctx.ino == EXT2_RESIZE_INO) ||
(pctx.ino == EXT2_JOURNAL_INO) ||
(pctx.ino == EXT2_EXCLUDE_INO) ||
(pctx.ino == EXT4_REPLICA_INO) ||
(pctx.ino > fs->super->s_inodes_count)) &&
fix_problem(ctx, PR_0_INVALID_QUOTA_INO, &pctx)) {
*quota_sb_inump(sb, qtype) = 0;
ext2fs_mark_super_dirty(fs);
}
}
}
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